package com.itheima.reggie.Controller;


import com.itheima.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.apache.tomcat.util.http.fileupload.IOUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;

import java.io.IOException;
import java.util.UUID;

@RestController
@Slf4j
@RequestMapping("/common")
public class CommonController {



    @PostMapping("/upload")
    public R<String> upload(MultipartFile file) throws IOException {

        //原始文件名
        String originalFilename = file.getOriginalFilename();
        String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));

        //使用UUID重新生成文件名,防止文件名称重复造成文件覆盖
        String fileName = UUID.randomUUID().toString() + suffix;
        //使用MultipartFile  对象提供的方法,将其内部的图片资源直接转存到本地磁盘
        file.transferTo(new File("c://myImg//" + fileName));


        return R.success(fileName);
    }

    @GetMapping("/download")
    public void download(String name, HttpServletResponse response) throws IOException {


        IOUtils.copy(new FileInputStream("c://myImg//" + name),response.getOutputStream());




    }
}